<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<head>
<script type="text/javascript">

function boom()
{
  var o = document.createElementNS("http://www.w3.org/1999/xhtml", "option");
  var q = document.getElementById("q");
  q.appendChild(o);
}

</script>
</head>
<body onload="boom();">

<xul:tree><xul:treechildren id="q"><div/></xul:treechildren></xul:tree>

</body>
</html>
